306806
What is the volume occupied by \(\mathrm{16 \mathrm{~g}}\) methane gas at STP?
1 \(\mathrm{1140 \mathrm{~cm}^{3}}\)
2 \(\mathrm{22400 \mathrm{~cm}^{3}}\)
3 \(\mathrm{214 \mathrm{~cm}^{3}}\)
4 \(\mathrm{12.4 \mathrm{~cm}^{3}}\)
Explanation:
1 mole any gas at STP occupies \(\mathrm{22.4 \mathrm{~L}}\) (or) \(\mathrm{22400 \mathrm{~cm}^{3}}\) Methane molar mass \(\mathrm{=16 \mathrm{~g} / \mathrm{mole}}\) \(\mathrm{\therefore 16 \mathrm{~g} \mathrm{CH}_{4}}\) occupies \(\mathrm{22400 \mathrm{~cm}^{3}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306807
The density of \({{\rm{O}}_{\rm{2}}}\) at \({{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) and 1 atm is \({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{g/litre}}\). The molar volume of gas is
1 22.4 lit.
2 11.2 lit
3 33.6 lit
4 5.6 lit.
Explanation:
\(\because \)\({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) gas occupies volume = 1 litre Molar volume means volume occupies by 1 mol of \({{\rm{O}}_{\rm{2}}}\) gas \(\therefore {\rm{32}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\) of \({{\rm{O}}_{\rm{2}}}\) gas occupies \({\rm{ = }}\frac{{{\rm{32}}}}{{{\rm{1}}{\rm{.429}}}}{\rm{ = 22}}{\rm{.4}}{\mkern 1mu} {\mkern 1mu} {\rm{litre}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306808
How many gram of \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) are present in \(\mathrm{0.25 \mathrm{~mol}}\) of it?
1 \(\mathrm{0.25 \mathrm{~g}}\)
2 \(\mathrm{5.4 \mathrm{~g}}\)
3 \(\mathrm{4.5 \mathrm{~g}}\)
4 \(\mathrm{6.1 \mathrm{~g}}\)
Explanation:
\(\mathrm{1 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=18 \mathrm{~g}}\) (molar mass) \(\mathrm{\therefore 0.25 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=\dfrac{18 \times 0.25}{1}=4.5 \mathrm{~g}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306810
Calculate the mass in gm of \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
1 22 gm
2 44 gm
3 88 gm
4 None of these
Explanation:
\(\because \)\({\mkern 1mu} {\mkern 1mu} {{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass = 44 gm \(\therefore \) \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass \({\rm{ = 44 \times 2 = 88}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\)
306806
What is the volume occupied by \(\mathrm{16 \mathrm{~g}}\) methane gas at STP?
1 \(\mathrm{1140 \mathrm{~cm}^{3}}\)
2 \(\mathrm{22400 \mathrm{~cm}^{3}}\)
3 \(\mathrm{214 \mathrm{~cm}^{3}}\)
4 \(\mathrm{12.4 \mathrm{~cm}^{3}}\)
Explanation:
1 mole any gas at STP occupies \(\mathrm{22.4 \mathrm{~L}}\) (or) \(\mathrm{22400 \mathrm{~cm}^{3}}\) Methane molar mass \(\mathrm{=16 \mathrm{~g} / \mathrm{mole}}\) \(\mathrm{\therefore 16 \mathrm{~g} \mathrm{CH}_{4}}\) occupies \(\mathrm{22400 \mathrm{~cm}^{3}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306807
The density of \({{\rm{O}}_{\rm{2}}}\) at \({{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) and 1 atm is \({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{g/litre}}\). The molar volume of gas is
1 22.4 lit.
2 11.2 lit
3 33.6 lit
4 5.6 lit.
Explanation:
\(\because \)\({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) gas occupies volume = 1 litre Molar volume means volume occupies by 1 mol of \({{\rm{O}}_{\rm{2}}}\) gas \(\therefore {\rm{32}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\) of \({{\rm{O}}_{\rm{2}}}\) gas occupies \({\rm{ = }}\frac{{{\rm{32}}}}{{{\rm{1}}{\rm{.429}}}}{\rm{ = 22}}{\rm{.4}}{\mkern 1mu} {\mkern 1mu} {\rm{litre}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306808
How many gram of \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) are present in \(\mathrm{0.25 \mathrm{~mol}}\) of it?
1 \(\mathrm{0.25 \mathrm{~g}}\)
2 \(\mathrm{5.4 \mathrm{~g}}\)
3 \(\mathrm{4.5 \mathrm{~g}}\)
4 \(\mathrm{6.1 \mathrm{~g}}\)
Explanation:
\(\mathrm{1 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=18 \mathrm{~g}}\) (molar mass) \(\mathrm{\therefore 0.25 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=\dfrac{18 \times 0.25}{1}=4.5 \mathrm{~g}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306810
Calculate the mass in gm of \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
1 22 gm
2 44 gm
3 88 gm
4 None of these
Explanation:
\(\because \)\({\mkern 1mu} {\mkern 1mu} {{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass = 44 gm \(\therefore \) \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass \({\rm{ = 44 \times 2 = 88}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\)
306806
What is the volume occupied by \(\mathrm{16 \mathrm{~g}}\) methane gas at STP?
1 \(\mathrm{1140 \mathrm{~cm}^{3}}\)
2 \(\mathrm{22400 \mathrm{~cm}^{3}}\)
3 \(\mathrm{214 \mathrm{~cm}^{3}}\)
4 \(\mathrm{12.4 \mathrm{~cm}^{3}}\)
Explanation:
1 mole any gas at STP occupies \(\mathrm{22.4 \mathrm{~L}}\) (or) \(\mathrm{22400 \mathrm{~cm}^{3}}\) Methane molar mass \(\mathrm{=16 \mathrm{~g} / \mathrm{mole}}\) \(\mathrm{\therefore 16 \mathrm{~g} \mathrm{CH}_{4}}\) occupies \(\mathrm{22400 \mathrm{~cm}^{3}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306807
The density of \({{\rm{O}}_{\rm{2}}}\) at \({{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) and 1 atm is \({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{g/litre}}\). The molar volume of gas is
1 22.4 lit.
2 11.2 lit
3 33.6 lit
4 5.6 lit.
Explanation:
\(\because \)\({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) gas occupies volume = 1 litre Molar volume means volume occupies by 1 mol of \({{\rm{O}}_{\rm{2}}}\) gas \(\therefore {\rm{32}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\) of \({{\rm{O}}_{\rm{2}}}\) gas occupies \({\rm{ = }}\frac{{{\rm{32}}}}{{{\rm{1}}{\rm{.429}}}}{\rm{ = 22}}{\rm{.4}}{\mkern 1mu} {\mkern 1mu} {\rm{litre}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306808
How many gram of \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) are present in \(\mathrm{0.25 \mathrm{~mol}}\) of it?
1 \(\mathrm{0.25 \mathrm{~g}}\)
2 \(\mathrm{5.4 \mathrm{~g}}\)
3 \(\mathrm{4.5 \mathrm{~g}}\)
4 \(\mathrm{6.1 \mathrm{~g}}\)
Explanation:
\(\mathrm{1 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=18 \mathrm{~g}}\) (molar mass) \(\mathrm{\therefore 0.25 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=\dfrac{18 \times 0.25}{1}=4.5 \mathrm{~g}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306810
Calculate the mass in gm of \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
1 22 gm
2 44 gm
3 88 gm
4 None of these
Explanation:
\(\because \)\({\mkern 1mu} {\mkern 1mu} {{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass = 44 gm \(\therefore \) \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass \({\rm{ = 44 \times 2 = 88}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\)
306806
What is the volume occupied by \(\mathrm{16 \mathrm{~g}}\) methane gas at STP?
1 \(\mathrm{1140 \mathrm{~cm}^{3}}\)
2 \(\mathrm{22400 \mathrm{~cm}^{3}}\)
3 \(\mathrm{214 \mathrm{~cm}^{3}}\)
4 \(\mathrm{12.4 \mathrm{~cm}^{3}}\)
Explanation:
1 mole any gas at STP occupies \(\mathrm{22.4 \mathrm{~L}}\) (or) \(\mathrm{22400 \mathrm{~cm}^{3}}\) Methane molar mass \(\mathrm{=16 \mathrm{~g} / \mathrm{mole}}\) \(\mathrm{\therefore 16 \mathrm{~g} \mathrm{CH}_{4}}\) occupies \(\mathrm{22400 \mathrm{~cm}^{3}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306807
The density of \({{\rm{O}}_{\rm{2}}}\) at \({{\rm{0}}^{\rm{^\circ }}}{\rm{C}}\) and 1 atm is \({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{g/litre}}\). The molar volume of gas is
1 22.4 lit.
2 11.2 lit
3 33.6 lit
4 5.6 lit.
Explanation:
\(\because \)\({\rm{1}}{\rm{.429}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}{\mkern 1mu} {\mkern 1mu} {\rm{of}}{\mkern 1mu} {\mkern 1mu} {{\rm{O}}_{\rm{2}}}\) gas occupies volume = 1 litre Molar volume means volume occupies by 1 mol of \({{\rm{O}}_{\rm{2}}}\) gas \(\therefore {\rm{32}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\) of \({{\rm{O}}_{\rm{2}}}\) gas occupies \({\rm{ = }}\frac{{{\rm{32}}}}{{{\rm{1}}{\rm{.429}}}}{\rm{ = 22}}{\rm{.4}}{\mkern 1mu} {\mkern 1mu} {\rm{litre}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306808
How many gram of \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) are present in \(\mathrm{0.25 \mathrm{~mol}}\) of it?
1 \(\mathrm{0.25 \mathrm{~g}}\)
2 \(\mathrm{5.4 \mathrm{~g}}\)
3 \(\mathrm{4.5 \mathrm{~g}}\)
4 \(\mathrm{6.1 \mathrm{~g}}\)
Explanation:
\(\mathrm{1 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=18 \mathrm{~g}}\) (molar mass) \(\mathrm{\therefore 0.25 \mathrm{~mol}}\) of \(\mathrm{\mathrm{H}_{2} \mathrm{O}=\dfrac{18 \times 0.25}{1}=4.5 \mathrm{~g}}\)
MHTCET - 2021
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY
306810
Calculate the mass in gm of \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
1 22 gm
2 44 gm
3 88 gm
4 None of these
Explanation:
\(\because \)\({\mkern 1mu} {\mkern 1mu} {{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass = 44 gm \(\therefore \) \({\rm{2}}{{\rm{N}}_{\rm{A}}}\) molecules of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) has molecular mass \({\rm{ = 44 \times 2 = 88}}{\mkern 1mu} {\mkern 1mu} {\rm{gm}}\)
